MI5 have opened inquiries over claims Manchester Arena bomber Salman Abedi was reported to authorities before the attack

MI5 started one review last week to look for any obvious errors it may have made.

But the inquiry was limited in scope as the agency’s resources were mostly devoted to the manhunt and recovering materials linked to the bomb.

The second review will be more detailed and focus on the decision-making around Abedi before the attack, and the processes and systems used to assess suspects and what was known about the other main conspirators.